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Ethyl Glucuronide (EtG) is a unique biological metabolite that is formed in the body after the consumption of ethanol, typically from drinking alcoholic beverages. Reported to be detectable in urine typically from 8-80 hours after ingestion, and 2-36 hours in blood EtG is detectable over a period roughly 5-6 times longer than traditional urine ethanol testing Detectable in oral fluid only a few hours longer than ethanol* EtG has also been isolated in hair follicles *G.Heiseth, B. Yttredal, et.al. ; JATox: July 2010
A second type of alcohol urine test doesnât look for alcohol. It looks for one of the by-products caused as it breaks down in the body. That substance is Ethyl Glucuronide (EtG). An EtG test advantage is that EtG remains in the body long after all the alcohol is gone. The exact length of time is unclear. It probably depends on a number of factors. Claims vary. Some say that EtG can last âup to 70 to 80 hours.â Others say âapproximately 80 hours.â Or âup to 80 hours,â â3 to four days,â etc.